3669138 has 80 divisors (see below), whose sum is σ = 9408960. Its totient is φ = 1058400.

The previous prime is 3669119. The next prime is 3669163. The reversal of 3669138 is 8319663.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51643 + ... + 51713.

It is an arithmetic number, because the mean of its divisors is an integer number (117612).

Almost surely, 2^3669138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3669138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4704480).

3669138 is an abundant number, since it is smaller than the sum of its proper divisors (5739822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3669138 is a wasteful number, since it uses less digits than its factorization.

3669138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 116 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3669138 is about 1915.4994126859. The cubic root of 3669138 is about 154.2368032791.

The spelling of 3669138 in words is "three million, six hundred sixty-nine thousand, one hundred thirty-eight".